如何在PyQt中绘制自定义椭圆形状？

from PyQt5.QtWidgets import QWidget, QApplication
from PyQt5.QtGui import QPainter, QPainterPath, QColor
from PyQt5.QtCore import Qt

class EllipseWidget(QWidget):
    def paintEvent(self, event):
        painter = QPainter(self)
        painter.setRenderHint(QPainter.Antialiasing)  # 设置抗锯齿渲染

        path = QPainterPath()
        path.addEllipse(50, 50, 200, 100)  # 设置椭圆的位置和大小

        painter.fillPath(path, QColor(255, 0, 0))  # 设置椭圆的填充颜色
        painter.drawPath(path)  # 绘制椭圆的边框

if __name__ == '__main__':
    app = QApplication([])
    widget = EllipseWidget()
    widget.show()
    app.exec_()